Thread advancing reel



` INVENToRs.

R/CHRD W. STANLE) CARL A. CASTEL/.AN 55 ZW hub I is secured to Patented Sept. 28, 1948 THREAD ADVANCINGREEL Richard W. Stanley, Drexel Hill, Pa., and Cari A.

Castellan,

Wilmingt Del., assignors to American Viscose Corporation, Wilmington, Del., a corporation of Delaware Application September 24, 1946,'Seriai No. 698,918.

This invention relates to thread-advancing reels which may be used for the production of a yarn store which is continuouslyadvanced axially of the periphery of the reel, during which time it may be subjected to fluid treatment in the manner and for the purposes .conventional in the art. The main object of thepresent invention is to provide an improved reel of as simple construction as possible. This is for the purpose of rendering reels of thev type disclosed more economical and hence more commercially practicable when it is desired to employ a reel of short axis of cantilever form, such as may be adapted to `replace a godet and associated wrap-displacing guide. Other objects and advantages of the invention will be apparent fromthe drawing and description thereof hereinafter.

In the drawing, which is illustrative of the invention,

Figure 1'is a. transverse cross-section of a preferred embodiment of the reel, y

Figure 2 is a section on line II-II of Figure 1, and

Figure 3 is a detai1 looking from line III- III of Figure 1.

As shown, the reel is mounted for rotation about a fixed shaft 2 and comprises two sets of threadcarrying bars 3 and 4 respectively. The set of bars 3 may be in the form of a cylindrical cage with the bars 3 extending laterally from the ringv 5 which may be formed integrally with the bars or secured thereto. The outer peripheral surfaces of the bars 3' lie substantially in a cylindrical surface concentric with the axis of shaft 2. The cage is secured to a web or plate 8 by means of cap screws 9. The the driving spindlel II by means of a nut I2. A bushing I3 is provided between the spindle II and the ixed shaft 2 and is so constructed that the bars 3- are concentric with and rotate about the axis of shaft 2.

vThe bars 4 are secured to supporting elements I4 which extend downwardly therefrom and are held against bearing-elements I5 and I6 whichv are spaced axially from each other and are carried upon a. central sleeve or bushing I1 xedly secured to the shaft 2 such as by means of nut I8 and/or key 1. The bearing surfaces of the central sleeve I1 which carry the bearing members I5 and I6 have a common center which is eccentric with respect to the axis of shaft .2. Bearing element I5 is rotatable about the sleeve I1,but element I6 is a cam fixed thereto by a key or wedge 6. The bearing member I5 may be provided with an arcuate groove comprising a plurality of seats I9 for receiving the complementarily formed convex portion I4a of the supporting elements I4. The cam I6 may have a peripheral groove having an arcuate contour as shown.

An annular plate 20 is secured to sleeve I1 by screws 20a has a plurality of radially extending axially projecting lugs 2l. The radial portions of the-supporting elements I4 work slidably within the guideways formed between adjacent lugs 2|, thereby limiting angular movement of the bars 4 relative to the bearings I5 and I6. Garter springs 22 and 23 hold the base of the supporting elements I4 in contact with, the bearing members I5 and I6 respectively. 1

' A plurality of bosses 24 extending inwardly of the plate 8 carry the ring 25 supporting a plurality of pins 26 which project into `apertures 21 (see Figure 3) in the plate 20. The apertures 21 are elongated radially sufliciently to allow for the relative eccentricity of the pins 26 to the plate 20 during rotation thereof.

A flexible seal 28, such as rubber', `synthetic rubber, or the like, is secured to the ring 5 by means of cap screws 9 and to the bars 4 which have bosses 29 adapted to protrude through suitable openings inthe sea1 28. As shown in the drawing, the seal has a radially inwardly extending portion terminating in the generally central reinforcing ring or bead 28a. This cup-shaped seal 28 overlaps and thereby co-operates with a fixed sealing ring 28h secured between two nuts 30 and 3l on the shaft 2.

There may be carried on the outer end of shaft 2, as between nuts 32 and 33, a flange 34 carrying a dofiing ring 35, thev inner end of which extends inwardly of the outer ends of the bars 3 and the outer end is provided with an outwardly turned flange36. Optionally, the ends of bars 3 may be provided with protuberances 31 to prevent any turns of thread from depositing upon the dofling ring 35 unaided by the operator. Such protuberances may be omitted if it is desired to have the thread turns forced off the bars by pushing action of bars 4.

The actuating surface of the clam IB may have a dwell portion extending for about to 270 from the base of the drop, and such dwell may advantageously be concentric with the axis of the bearing surfaces on sleeve I1,'the rise occurring inthe remainder' of the cycle. As shown, the dwell extends about and is concentric with the axis yof the bearing surfaces on sleeve I1;

- the rise occurs in the remainder of the cycle,

that is, about 230, leaving a negligible arc for the drop. As viewed in Figure 2 with the eccen- 3 tric axis vertcially below the concentric of shaft 2, the drop in the cam may occur at any position in the upper left quadrant, but preferably between that shown and that vertically above shaft 2. 'I'he cam rise may start at any position after the eccentric bars 4 rst take the thread from the concentric bars 3 but before the concentric bars can take back the thread, that is, roughly in the g..

lower two quadrants of Figure 2, preferably with'- in the lower right quadrant. y f

, In operation. spindle I I is driven, thereby dri ing the concentric cage of bars 3. The rotation of the concentric cage is transmitted to the eccentrically mounted bars bymeans of pins 26 engaging slots 21 in the plate 2l and by virtue of the guiding lugs 2i carried by the plate 2l which prevent lagging of the bars 4. During rotation, bars 4 alternately protrude and recede'from the general periphery of the concentric cage of bars 3 and during such protrusion each bar 4 is rocked generally about an axis at the center of curvature of the curved foot portion l4a by virtue of the action of cam I6. Since the rocking action lifts each turn of the thread helix carried on the reel by means of the eccentric bars 4 through an arc such that the thread-carrying surfaces of the eccentric -bars can recede into the surface dened by the concentric bars 3 without transferring the thread turns back thereto, it will be noted that, because 'of the eccentric bearing Ma for the supporting elements I4 of the eccentric bars 4, during the return arc of the bars 4 occurring at the drop in vthe cam, the concentric bars 3 receive the thread turns before the arc is completed, thereby causing advance of the turns axially toward the outer end of the reel. f

Although a cantilever form of reel is shown, that is, one which is supported at one end only. the reel construction is adaptable also to reels supported at both ends and capable of supporting a great number of windings spaced longitudinally of the bars thereof. As appearsv from the drawing and description thereof, the reel is of simple and inexpensive construction and therefore most advantageously adaptable for use when a small number of turns are to be handled thereby.

It is to be understood that changes and variations may be made without departing from the spirit and scope of the invention as defined in the appended claims.

We claim:

1. A thread-advancing reel comprising a set of spaced bars rotatable about an axis, a second set of spaced bars interdigitating with the bars of the rst set, means for supporting the second set of bars rotatably on an axis of rotation eccentric to that of the first set, each of the bars of the second set being mounted on the supporting means pivotally on a single axis transverse of the axis of rotation of the second set of bars, a fixed cam comprising an actuating surface having a gradual rise through an arc greater than 90 followed by a drop through an arc of less than 90 and then followed by a dwell between the drop and the rise, said cam being spaced axially of the reel from the plane of the pivotal axes of the bars of the second set, and means for rotating the bars whereby the bars of the second set are rocked about their pivotal axes by said fixed cam. A

2. A thread-advancing reel comprising a set of spaced bars rotatable about an axis, a second set of spaced bars interdigitating with the bars of the rst set, means for supporting the second set of bars rotatably on an axis of rotation eccentric to that of theilrst set, each of the bars oi the Ysecond set being mounted on the supporting means pivotally on a single axis transverse of the axis of rotation of the second set of bars, said supporting means comprising a fixed cam comprising an actuating surface having a gradual rise through an arc greater than 90 followed by a drop through an arc oi' less than 90 and then followed by a 'dwell between the drop andthe rise, said cam being spaced axially of the reel from the plane of the pivotal axes of the bars of the second set. and means for rotating the bars whereby the bars of the second set are rocked about their pivotal axes by said fixed cam.

3. A thread-advancing reel comprising a set of spaced, longitudinally extending bars rotatable about an axis. a second set of spaced longitudinally extending bars interdigitating with the bars of the first set, means for supporting the second set of bars rotatably on an axis of rotation eccentric to that of the rst set, said second set of bars being mounted on the supporting means pivotally on axes transverse ofthe axis of rotation thereof. a fixed cam comprising an actuating surface having a gradual rise through an arc greater than followed by a drop through an arc of less than 90 and then followed by a dwell between the drop and the rise,.said cam being spaced axially of the reel away from the pivotal axes of the second set of bars, and the second set of bars being arranged vto bear against the fixed cam.

4. A thread-advancing reel comprising a set of spaced bars rotatable about an axis; a second set of spaced bars interdigitating with the bars of the `first set; means for supporting the second set of barsrotatably on an axis of rotation displaced from that of the first set comprising two axially spaced bearing members, one of the members being rotatable upon said displaced axis, the other being a xed cam comprising an actuating surface having a gradual rise through an arc of greater than 90 followed by a drop through an arc oi' less than 90 and then followed by a dwell between the drop and the rise supporting elements for the bars of the second set resting against both bearing members and slidable relative thereto, guide means slidably engaged by the supporting elements for limiting the angular movement of the second set of bars relative to the bearing members; and means for rotating the bars whereby such rotation rocks the bars ofthe second set with respect to their supporting means to effect alternate protrusion and recession thereof with re'spect to the bars of the nrst set and to thereby advance windings of thread carried on the reel axially thereof,

5. A thread-advancing reel comprising a set of spaced bars rotatable about an axis; a second set of spaced bars interdigitating with the bars oi the first set, a fixed shaft, a spindle rotatable on the shaft for driving the bars of the ilrst set about its axis; a sleeve iixed to the shaft and having spaced bearing surfaces having a common axis of revolution eccentric to that of the shaft, two axially spaced bearing members carried on the surfaces, one of said members being rotatable upon the sleeve, the other being a cam iixed thereto comprising an actuating surface having a gradual rise through an arc of greater than .90 followed by a drop through an are of less than 90 and then followed by a dwell between the drop and the rise, supporting elements for the bars of the second set, and means for holding the supporting elements in engagement with the bearing members.

6. A thread-accancing reel comprising a set o! spaced bars rotatable about an axis; a second set"- of spacedA bars interdigitating with the -bars of the ilrst set, a fixed shaft, a spindle rotatable on the shaft for driving the bars of the first set about its axis; a-sleeve fixed to the shaft and having spaced bearing surfaces having a common axis of revolution eccentric to that of the shaft, two axially spaced bearing members carried on the surfaces, one of said members being rotatable upon the sleeve, the other being a cam fixed thereto comprising an actuating surface having a gradual rise through an arc of greater than 90 followed by drop through an arc of less than 90 and then followed'by a dwell between the drop and the rise, supporting elements for the bars of the second set, spring means for holding the supporting elements in slidable engagement with the bearing` members, guide members rotatable with 5 bers.

one of said bearing members having radial'guideways slidably engaged by the. supporting elements for limiting the angular movement of the second set yof bars relative to the bearing mem- RICHARD W. STANLEY. CARL A. CAS'I'ELLAN.

REFERENCES CITED 1' The following references are of record in the le of this patent:

UNITED STATES PATENTS Number y Name Date K 15' 2,179,523 Samerdyke ..Y Nov. 14, 1939 2,384,963 Pollak Sept. 18, 1945 2,386,249 McDermott Oct. 9, 1945 

